What did the engine manufacturer recommend for the engine when it was new in a factory installation?

---- Jon Durham <jon_durham@KNOLOGY.NET> wrote: 
> Bostig recommends an oil change every 3 to 5K using synthetic oil. Since
> many sources cite changing it every 10K, I'm wondering if the
> recommendation is over kill.
> 
> Jon
> --
> “All that we are is the result of what we have thought. The mind is
> everything. What we think, we become.” Buddha

--
David McNeely